//
//  AppDelegate.swift
//  Weibo
//
//  Created by 李洋 on 15/12/12.
//  Copyright © 2015年 Leon. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        
        let account = UserAccount.loadAccount()
        
        print(account)
        
        window = UIWindow(frame: UIScreen.mainScreen().bounds)
        window?.backgroundColor = UIColor.whiteColor()
        window?.makeKeyAndVisible()
        //window?.rootViewController = MainViewController()
//        window?.rootViewController = NewFeatureViewController()
        
     
        window?.rootViewController = defaultViewController()
        
        UINavigationBar.appearance().tintColor = themeColor
        
        UITabBar.appearance().tintColor = themeColor
        
        registerNotification()
        
        return true
    }
    
    //注册通知
    //object不为空 通知  nil:对应广播
    private func registerNotification() {
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "switchRootVC:", name: WBSwitchRootVCNotification, object: nil)
    }
    //移除通知
    deinit {
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
    
    @objc private func switchRootVC(n:NSNotification) {
        
        //根据通知切换根视图控制器
        if n.object != nil {
            window?.rootViewController = WelcomeViewController()
            return
        }
        
        window?.rootViewController = MainViewController()
        
    }
    
    //根据用户是否登陆过显示正确的页面
    private func defaultViewController() -> UIViewController {
        //是否登陆
        if UserAccountViewModel().userLogin {
            return isNewVersion() ? NewFeatureViewController() : WelcomeViewController()
        }
        return MainViewController()
    }
    
    //判断是否是新版本
    private func isNewVersion() -> Bool {
        //获取当前应用的版本号
        let info = NSBundle.mainBundle().infoDictionary
        let currentStr = info!["CFBundleShortVersionString"] as! String
        let currentNum = Double(currentStr)
        
        //获取本地缓存的版本
        let userDefault = NSUserDefaults.standardUserDefaults()
        let sandBoxKey = "sandBoxKey"
        let lastNum = userDefault.doubleForKey(sandBoxKey)
        
        //立即存储当前应用的版本号
        userDefault.setDouble(currentNum!, forKey: sandBoxKey)
        userDefault.synchronize()
        
        return currentNum! > lastNum
    }

    
    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

